# 水输入

水输入节点是水进入系统的机制。在这里，我们介绍三个最常用的水输入节点。

{% content-ref url="water-input/input-node" %}
[input-node](https://water-strategy.gitbook.io/waterstrategy/zhong-guo-ren/jian-mo-ji-chu-zhi-shi/node-types/water-input/input-node)
{% endcontent-ref %}

{% content-ref url="water-input/catchment-node" %}
[catchment-node](https://water-strategy.gitbook.io/waterstrategy/zhong-guo-ren/jian-mo-ji-chu-zhi-shi/node-types/water-input/catchment-node)
{% endcontent-ref %}

{% content-ref url="water-input/proportional-input-node" %}
[proportional-input-node](https://water-strategy.gitbook.io/waterstrategy/zhong-guo-ren/jian-mo-ji-chu-zhi-shi/node-types/water-input/proportional-input-node)
{% endcontent-ref %}